Jatin Kumar Singh developed comprehensive Profile Guided Optimization (PGO) documentation and build guidance for the tarantool/datafusion repository, focusing on enabling developers to achieve up to 25% performance improvements on DataFusion workloads. He detailed a three-stage build process—instrumentation, profiling, and recompilation—using Rust and Markdown, and provided practical workflow instructions to facilitate adoption. His work emphasized clear documentation and robust build configuration, validated through continuous integration. Although no major bugs were addressed during this period, Jatin’s contribution improved the accessibility and efficiency of PGO for engineers, supporting faster, more optimized builds and preparing the documentation for publication on the DataFusion website.